Physico-chemical experiments are reviewed and the thermodynamic proper
ties of solid and gaseous zirconium halides of the general formula ZrX
n (X = F, Cl, Br, I; n = 1-4) are evaluated and, where necessary, esti
mated by analogy with other metal halide systems. Thermodynamic key va
lues at 298.15 K and heat capacity equations are tabulated up to 1500
K for the solid phase and 3000 K for the gas phase. (C) 1997 Elsevier
Science B.V.